211172157116 has 12 divisors (see below), whose sum is σ = 369707154600. Its totient is φ = 105541541520.

The previous prime is 211172157113. The next prime is 211172157169. The reversal of 211172157116 is 611751271112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211172157113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11123591 + ... + 11142558.

It is an arithmetic number, because the mean of its divisors is an integer number (30808929550).

Almost surely, 2^211172157116 is an apocalyptic number.

It is an amenable number.

211172157116 is a deficient number, since it is larger than the sum of its proper divisors (158534997484).

211172157116 is a wasteful number, since it uses less digits than its factorization.

211172157116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22268524 (or 22268522 counting only the distinct ones).

The product of its digits is 5880, while the sum is 35.

The spelling of 211172157116 in words is "two hundred eleven billion, one hundred seventy-two million, one hundred fifty-seven thousand, one hundred sixteen".